Legendary Reliability UP FOR ANYTHING


I-4 Four Strokes

I-4 Four Strokes

Digital: 200 hp, 175 hp, 150 hp
Mechanical 200 hp, 175 hp, 150 hp

There’s a good reason why the legendary Yamaha F150 is the best-selling 150-horsepower four stroke of all time. Powerful, light, nimble and compact, boaters know that its proven reliability is unmatched for everything from pontoons to flats boats to deep-V hulls. That record of performance spawned a remarkable family line that continues with the F175 and F200. Now, more boaters can enjoy Yamaha’s technologically advanced I-4 line than ever before. Whether your rigging is digital or mechanical, the entire lineup is compatible with your control preference. It’s just one of the ways the I-4 line keeps getting better and better, year after year.

Owners Manuals
Helm Master Compatible
3yearlimitedwarranty
IBEX Innovation Winner

Compatible controls for every platform

For the first time, the entire I-4 lineup is available with either digital or mechanical controls. The 26-inch mounting centers and bolt pattern on the F150, F175 and F200 are the same as those on our HPDI® two strokes, making it easy for you to step up or down in horses without having to replace your rigging.

POWER & PERFORMANCE

 
Impressive Power-to-Weight
Impressive Power-to-Weight

Impressive Power-to-Weight


A proven 16-valve DOHC In-Line design, with four valves per cylinder maximizes efficiency and power. It also streamlines design, giving the F200 class-leading power-to-weight and making the F175 nearly 30 pounds lighter than its closest 1.7-liter competitor.

Optimum Power
Optimum Power

Optimum Power


Precision Multi-Point Electronic Fuel Injection and long-track intake system combine to maximize power and fuel efficiency across the line of In-Line Fours (except F150 Mechanical).

Two-Stroke Performance from a Four Stroke
Two-Stroke Performance from a Four Stroke

Two-Stroke Performance from a Four Stroke


Four valves per cylinder maximizes combustion efficiency in a way that no two stroke can, delivering the utmost in clean, quiet power and performance.

Quick Acceleration
Quick Acceleration

Quick Acceleration


A 10mm Offset Crankshaft allows for larger intake volume design. Four tuned intake tubes boost torque in low and mid-speed ranges for quick acceleration.

Powerful Hole Shot
Powerful Hole Shot

Powerful Hole Shot


The Composite Intake Manifold is a lightweight, compact design, making these engines very versatile. Long Tube Intake Tracks are tuned to increase airflow, boosting low-end and midrange torque. This means a more powerful hole shot and increased acceleration. Even with all this responsive power, an air silencer box and surge tank reduce air intake noise and air turbulence for smoother operation.

Incredible Low and Mid-Range Torque
Incredible Low and Mid-Range Torque

Incredible Low and Mid-Range Torque


Variable Camshaft Timing (VCT) advances or slows the camshaft timing based on engine load and RPM, improving intake and exhaust efficiency and boosting torque in the 2,000 to 3,500 RPM range

Reliability & Durability

Reliability & Durability

Corrosion Resistance


Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all Yamaha In-Line Four-Stroke engines.

i4 Convenience & Control

Convenience & Control

  • Repower Ready

    26-inch mounting centers and a bolt pattern that matches previous two strokes make In-Line Fours flexible for most repowers

  • Better Charging

    With up to 50-amp alternators, our In-Line Fours provide plenty of power for a range of electronics, which comes handy, now that they're all compatible with digital controls

  • Extended Trim

    Extended Trim Range delivers better acceleration-to-plane and top-end speed. The tilt range is a full 70° for tilting the engine above the waterline.

  • Easy Engine Flushing

    A Freshwater Flush Device allows you to flush the engine without running it, for added convenience and extended engine life.

  • Quieter Operation

    Yamaha's Shift Dampener System greatly reduces the noise commonly associated with shifting gears. Using a special design and components, much of the force of shifting is absorbed, resulting in far quieter and smoother operation.

In-line 4 Videos:

 
V1: Yamaha In-Line Four

Meet the Line-Up

F200 (i4)

IN-LINE 4 200 hp

The lightest DOHC outboard in its class, this I-4 is the perfect, lightweight 200-hp solution for small- to medium-size boats. Plus, it’s the first in-line four compatible with Helm Master®, our fully integrated digital boat control system.

  • Compatible with mechanical controls or digital Command Link Plus® or Helm Master® controls
  • Runs on economical 89 octane
  • Only 487 pounds (20” shaft model)
  • 20” or 25” shaft options (LH rotation available in 25” shaft digital control)
  • 50-amp alternator provides 13 percent more power than V6 3.3-liter F200
F175 (i4)

IN-LINE 4 175 hp

The F175 is 30 pounds lighter than its closest 1.7-liter competitor, but it still delivers breathtaking acceleration, midrange punch and impressively smooth performance. It’s compatible with either mechanical controls or digital controls.

  • Available for digital (Command Link Plus®) or mechanical controls
  • Only 483 pounds (20” shaft model)
  • Available in 20” or 25” shafts
  • A 50-amp alternator to power an array of onboard electronics
F150 (i4)

IN-LINE 4 150 hp

The F150 is one that started it all and it’s more popular than ever. Powerful, light and compact, it’s now mechanical or digital compatible, making it available to more boaters than ever before.

  • Compatible with mechanical controls or digital Command Link Plus® or Helm Master® controls
  • Only 478 pounds (20” shaft model)
  • Available in 20” or 25” shafts
  • Powerful 50-amp alternator (2.8-liter digital) or 35-amp alternator (2.7-liter mechanical)

Specs & Compare

Engine Comparison
Engine Type Inline 4
Displacement 2785cc
Bore x Stroke 96 x 96.2mm (3.78 x 3.79in)
Prop Shaft Horsepower 175hp - 200hp @ 5500 rpm
Full Throttle RPM Range 5000 ~ 6000 rpm
Alternator Output at W.O.T. 50 Amp
Compression Ratio 10.3:1
Fuel Induction System EFI
Weight* 220 kg (487 lbs) - 221 kg (489 lb)
Recommended Fuel Octane 89
Recommended Engine Oil Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration Yamaha 10 Micron Fuel/Water Separating Filter (external)

*Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).

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Engine Comparison
Engine Type Inline 4
Displacement 2785cc
Bore x Stroke 96 x 96.2mm (3.78 x 3.79in)
Prop Shaft Horsepower 175 hp @ 5500 rpm
Full Throttle RPM Range 5000 ~ 6000 rpm
Alternator Output at W.O.T. 50 Amp
Compression Ratio 10.3:1
Fuel Induction System EFI
Weight* 219 kg (483 lbs) - 221 kg (487 lbs)
Recommended Fuel Octane 87
Recommended Engine Oil Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration Yamaha 10 Micron Fuel/Water Separating Filter (external)

*Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).

Product Preview
Engine Comparison
Engine Type Inline 4
Displacement 2670cc - 2785cc
Bore x Stroke 94 x 96.2 (3.70 x 3.79in) - 96 x 96.2mm (3.78 x 3.79in)
Prop Shaft Horsepower 150hp @ 5500 rpm
Full Throttle RPM Range 5000 ~ 6000 rpm
Alternator Output at W.O.T. 35 - 50 Amp
Compression Ratio 9.0:1 & 10.3:1
Fuel Induction System EFI
Weight* 217kg (478 lbs) - 221kg (487 lbs)
Recommended Fuel Octane 87 & Octane 89
Recommended Engine Oil Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration Yamaha 10 Micron Fuel/Water Separating Filter (external)

*Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).

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Perf. Bulletins